The influence of DC stray current on pipeline corrosion

作     者：Gan Cui Zi-Li Li Chao Yang Meng Wang 

作者机构：College of Pipeline and Civil EngineeringChina University of Petroleum (East China) 

出 版 物：《Petroleum Science》 (石油科学（英文版）)

年 卷 期：2016年第13卷第1期

页      面：135-145页

核心收录：

学科分类：0820[工学-石油与天然气工程] 080706[工学-化工过程机械] 081901[工学-采矿工程] 0819[工学-矿业工程] 08[工学] 0807[工学-动力工程及工程热物理] 082003[工学-油气储运工程] 

主　　题：pipelines Pipeline anode crossing cathodic buried cathode resistivity unchanged intersection 

摘      要：DC stray current can cause severe corrosion on buried *** this study,firstly,we deduced the equation of DC stray current interference on ***,the cathode boundary condition was discretized with pipe elements,and corresponding experiments were designed to validate the mathematical ***,the numerical simulation program BEASY was used to study the corrosion effect of DC stray current that an auxiliary anode bed generated in an impressed current cathodic protection *** effects of crossing angle,crossing distance,distance of the two pipelines,anode output current,depth,and soil resistivity were *** results indicate that pipeline crossing substantially affects the corrosion potential of both protected and unprotected *** crossing angles,crossing distances,and anode depths,our results suggest,have no significant *** anode output current or soil resistivity reduces pipeline corrosion gradually.A reduction of corrosion also occurs when the distance between two parallel pipelines increases.